Set element parameter value from list index with different values

I am having trouble figuring out how to set the value from a list index. The top list from the List.FilterBySublistLenght was easy as the value stays the same. The bottom list from the List.FilterBySublistLenght needs to cycle with the list index 1,2…# with values a,b,…#.

So List0
index 0 gets value “a” put in the elements “Subscript” parameter
index 1 gets value “b” put in the elements “Subscript” parameter
So List1
index 0 gets value “a” put in the elements “Subscript” parameter
index 1 gets value “b” put in the elements “Subscript” parameter
index 2 gets value “c” put in the elements “Subscript” parameter
.
.

When in doubt, match list structure and length. This never fails. Repeat the values a, b, and c for each item in the sublists.

Otherwise, try element@L2 so that each sublist is treated separately.

Thanks, works great using levels